Migrating from iPhone 5S to Samsung 6, using Smart Switch.
After installing and trying to run, I kept getting "Unfortunately your app has stopped"messages. After clearing the cache and browser data (having found a url that told me how), I struggled to get my contacts and calendar backed up.
Now that it seems to have done something, I appear to have a course running for the next two days, but each day starts at different times [they both start at 9.30] and I am mysteriously attending another course the next day too [I'm not!]. My boys athletics training days all seem to start at different times now too. Angry? Yup! 